Pith Number

pith:FVJXUM6Y

pith:2017:FVJXUM6YLQGVRU4R7M4D3DFC44

not attested not anchored not stored refs pending

Constructing and Counting Hexaflexagons

Marshall Hampton

arxiv:1704.07775 v2 · 2017-04-25 · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FVJXUM6YLQGVRU4R7M4D3DFC44}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:39:46.316384Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d537a33d85c0d58d391fb383d8ca2e71ca96f683066ae5864fe53863d0c07ed

Aliases

arxiv: 1704.07775 · arxiv_version: 1704.07775v2 · doi: 10.48550/arxiv.1704.07775 · pith_short_12: FVJXUM6YLQGV · pith_short_16: FVJXUM6YLQGVRU4R · pith_short_8: FVJXUM6Y

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/FVJXUM6YLQGVRU4R7M4D3DFC44 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 2d537a33d85c0d58d391fb383d8ca2e71ca96f683066ae5864fe53863d0c07ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62a7f390df3a522fba42e1756b3ed393abf78c6de5bb6eec63657b5107449828",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-04-25T16:40:00Z",
    "title_canon_sha256": "6fd9307563ec2608d249b493fd683c8df87b227dbeef2e75c95697aaf2c2b869"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.07775",
    "kind": "arxiv",
    "version": 2
  }
}